<p>设置宽度自适应</p>
<textarea style="width: 80%" tiTextarea [placeholder]="placeholder" [(ngModel)]="value"></textarea>
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<textarea style="width: 100%" tiTextarea [placeholder]="placeholder" [(ngModel)]="value"></textarea>
<br /><br />
<textarea style="width: 400px" tiTextarea [placeholder]="placeholder" [(ngModel)]="value"></textarea>
